JPS602866A - Cooler for refrigerator, etc. - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention is used as a cooler for refrigeration equipment such as a refrigerator.

(Opening) Prior art A conventional refrigerator is shown in Figures 1 and 2. (1) A layer of foam insulation material such as urethane is placed between the back plate of the outer box of the storage compartment - +21rJ and the outer box. Intervening inner box wall, (3)
A cold air circulation space provided through the outlet cover of the freezer (4), the bottom plate of the freezer (4) (5), and the insulation material 17 on the back side of the freezer 141. , cold air is forced to circulate in the direction of the arrow. (81 is a drain that drains the debound water from the cold air circulation space (6) to the outside, (9) is a dew receiving plate, (
A drain heater attached to the back side of the dew receiving plate (2) in 9a) prevents the drain (8) from freezing. +1 (L is a cooler installed in the cold air circulation space (6), and is configured as follows. A spine fin tube with spine fins R131 provided on the outer periphery of a refrigerant guide tube uz. Goob, 180 It has multiple rows of bent portions (11a) and portions (11b) arranged approximately in parallel.141fi A glass tube heater for removing frost attached to the spine fin tube ttn. It is located at the bottom of the ill and upwind.Heating elements (151
Both ends of the inserted glass tube (16) are sealed with rubber plugs (171). However, in the conventional cooler 1101, a glass tube heater I top (= direct rain, thermal shock every time defrosting the glass tube (L mark), the glass tube is extremely damaged (= even if there is a small scratch, this glass tube decoy will be damaged) In addition, in the conventional cooler (101), the glass tube heater (L4) Ft cannot be formed because the housing space is narrow and it is shaped like a straight tube, so the heat generation amount per unit length is set to be relatively large. Its surface has a very high degree of IA, and when defrosting water drops drop onto this high-temperature glass tube (16), water vapor (li) is generated, and this water vapor is used to damage electric parts such as fan motors (not shown) and heat insulation. It has the disadvantage that it invades the materials, causing poor insulation of electrical parts and deterioration of the insulation function of the heat insulating material.

ρ1 Purpose of the Invention In view of the above-mentioned points, it is an object of the present invention to provide a cooler that is free from thermal damage and does not cause deterioration in the performance of electrical components and insulation materials due to the generation of water vapor. be.

2) Structure of the Invention This invention comprises a spirally wound spine fin tube into which a refrigerant is introduced, and a spine fin tube (=
It consists of a pipe heater inserted and held inside the spiral of the pipe.

(B) Embodiment In FIGS. 6 and 4, (201) is a spine fin tube (S-pine fin tube) into which low-temperature refrigerant is introduced from the refrigeration circuit (not shown), and the refrigerant introduction tube (201) Thorn-like fins are provided on the outer periphery of the spine fin tube (A).
It is made of a metal with relatively high thermal conductivity such as aluminum, and has a preset pitch (p it ch ) (P
) and the inner diameter (dl).

@ Insert the insulated heater wire (C) into the metal pipe (C), and connect both ends of the metal pipe (C) with an elastic material such as rubber (H).
It is a vibrator heater that is completely sealed, and its outer diameter (d2)
is the inner diameter of the spine fin tube four spirals ((li,!
, the rim also forms a slightly larger monkey, the spine fin tube (
It is inserted into the inside of the spiral at the end (to) and is held by the elastic force of the spine fin @ (second fin (a)).The metal pipe (a) of the vibe heater (e) is made of copper, aluminum, etc. It is made of a material with high thermal conductivity.
Therefore, the heat generated in the metal pipe (a) quickly diffuses through the three pin fins (a).

(f) Effects of the Invention Since the present invention is constructed as described above, ■ In the conventional example, if the glass tube heater cracks, the heater wire may be exposed, causing poor insulation and abnormal heat generation (2). On the other hand, in this invention, the vibrator is protected by a spine fin and the pipe itself is made of relatively hard metal, so the aforementioned insulation failure and abnormal heat generation can be prevented. Because of the rapid diffusion through the spine fins of the vibrator, a low temperature layer close to the melting temperature of frost is maintained on the surface of the vibrator, thus preventing the generation of water vapor (=, the cooler of the present invention It is possible to prevent an undesirable rise in the internal temperature of a refrigerator equipped with a refrigerator.

(2) Since the vibrator heater is held by spine fins, it is possible to simplify the structure by omitting a dedicated support for the vibrator heater.

[Brief explanation of the drawing]

Fig. 1 and Fig. 2 show the conventional example, Fig. 1 is a cross-sectional view taken from the back of the sword, Fig. 2 is a cross-sectional view taken along line A-A in Fig. 1, Fig. 3 and Fig. FIG. 4 shows an embodiment of the present invention, FIG. 3 is a schematic front view, and FIG. 4 is a partially omitted political side view. 2G...Spineph [tube, ni]...Metal pipe heater.

Claims (1)

[Claims] 1) A cooler, such as a refrigerator, comprising a spirally wound spine fin tube into which a refrigerant is introduced, and a metal vibe heater inserted and held inside the spiral in the spine fin tube.